pixlet.c File Reference

#include <stdint.h>
#include "libavutil/intmath.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "get_bits.h"
#include "thread.h"
#include "unary.h"

Go to the source code of this file.

Data Structures
struct	SubBand
struct	PixletContext

Macros
#define	NB_LEVELS   4
#define	PIXLET_MAGIC   0xDEADBEEF
#define	H   0
#define	V   1

Functions
static av_cold int	pixlet_init (AVCodecContext *avctx)
static void	free_buffers (AVCodecContext *avctx)
static av_cold int	pixlet_close (AVCodecContext *avctx)
static int	init_decoder (AVCodecContext *avctx)
static int	read_low_coeffs (AVCodecContext *avctx, int16_t *dst, int size, int width, ptrdiff_t stride)
static int	read_high_coeffs (AVCodecContext *avctx, const uint8_t *src, int16_t *dst, int size, int c, int a, int d, int width, ptrdiff_t stride)
static int	read_highpass (AVCodecContext *avctx, const uint8_t *ptr, int plane, AVFrame *frame)
static void	lowpass_prediction (int16_t *dst, int16_t *pred, int width, int height, ptrdiff_t stride)
static void	filterfn (int16_t *dest, int16_t *tmp, unsigned size, int64_t scale)
static void	reconstruction (AVCodecContext *avctx, int16_t *dest, unsigned width, unsigned height, ptrdiff_t stride, int64_t *scaling_h, int64_t *scaling_v)
static void	build_luma_lut (AVCodecContext *avctx, int depth)
static void	postprocess_luma (AVCodecContext *avctx, AVFrame *frame, int w, int h, int depth)
static void	postprocess_chroma (AVFrame *frame, int w, int h, int depth)
static int	decode_plane (AVCodecContext *avctx, int plane, const AVPacket *avpkt, AVFrame *frame)
static int	pixlet_decode_frame (AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)

Variables
const FFCodec	ff_pixlet_decoder

Macro Definition Documentation

NB_LEVELS

#define NB_LEVELS   4

Definition at line 34 of file pixlet.c.

PIXLET_MAGIC

#define PIXLET_MAGIC   0xDEADBEEF

Definition at line 36 of file pixlet.c.

H

#define H   0

Definition at line 38 of file pixlet.c.

V

#define V   1

Definition at line 39 of file pixlet.c.

Function Documentation

pixlet_init()

static av_cold int pixlet_init ( AVCodecContext *  avctx )

static

Definition at line 64 of file pixlet.c.

free_buffers()

static void free_buffers ( AVCodecContext *  avctx )

static

Definition at line 71 of file pixlet.c.

Referenced by pixlet_close(), and pixlet_decode_frame().

pixlet_close()

static av_cold int pixlet_close ( AVCodecContext *  avctx )

static

Definition at line 80 of file pixlet.c.

init_decoder()

static int init_decoder ( AVCodecContext *  avctx )

static

Definition at line 89 of file pixlet.c.

Referenced by pixlet_decode_frame().

read_low_coeffs()

static int read_low_coeffs ( AVCodecContext *  avctx, int16_t *  dst, int  size, int  width, ptrdiff_t  stride  )

static

Definition at line 124 of file pixlet.c.

Referenced by decode_plane().

read_high_coeffs()

static int read_high_coeffs ( AVCodecContext *  avctx, const uint8_t *  src, int16_t *  dst, int  size, int  c, int  a, int  d, int  width, ptrdiff_t  stride  )

static

Definition at line 199 of file pixlet.c.

Referenced by read_highpass().

read_highpass()

static int read_highpass ( AVCodecContext *  avctx, const uint8_t *  ptr, int  plane, AVFrame *  frame  )

static

Definition at line 314 of file pixlet.c.

Referenced by decode_plane().

lowpass_prediction()

static void lowpass_prediction ( int16_t *  dst, int16_t *  pred, int  width, int  height, ptrdiff_t  stride  )

static

Definition at line 357 of file pixlet.c.

Referenced by decode_plane().

filterfn()

static void filterfn ( int16_t *  dest, int16_t *  tmp, unsigned  size, int64_t  scale  )

static

Definition at line 377 of file pixlet.c.

Referenced by reconstruction().

reconstruction()

static void reconstruction ( AVCodecContext *  avctx, int16_t *  dest, unsigned  width, unsigned  height, ptrdiff_t  stride, int64_t *  scaling_h, int64_t *  scaling_v  )

static

Definition at line 422 of file pixlet.c.

Referenced by decode_plane().

build_luma_lut()

static void build_luma_lut ( AVCodecContext *  avctx, int  depth  )

static

Definition at line 465 of file pixlet.c.

Referenced by pixlet_decode_frame().

postprocess_luma()

static void postprocess_luma ( AVCodecContext *  avctx, AVFrame *  frame, int  w, int  h, int  depth  )

static

Definition at line 478 of file pixlet.c.

Referenced by pixlet_decode_frame().

postprocess_chroma()

static void postprocess_chroma ( AVFrame *  frame, int  w, int  h, int  depth  )

static

Definition at line 502 of file pixlet.c.

Referenced by pixlet_decode_frame().

decode_plane()

static int decode_plane ( AVCodecContext *  avctx, int  plane, const AVPacket *  avpkt, AVFrame *  frame  )

static

Definition at line 526 of file pixlet.c.

Referenced by pixlet_decode_frame().

pixlet_decode_frame()

static int pixlet_decode_frame ( AVCodecContext *  avctx, AVFrame *  p, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 602 of file pixlet.c.

Variable Documentation

ff_pixlet_decoder

const FFCodec ff_pixlet_decoder

Initial value:

= {
    .p.name           = "pixlet",
    CODEC_LONG_NAME("Apple Pixlet"),
    .p.type           = AVMEDIA_TYPE_VIDEO,
    .p.id             = AV_CODEC_ID_PIXLET,
    .init             = pixlet_init,
    .close            = pixlet_close,
    FF_CODEC_DECODE_CB(pixlet_decode_frame),
    .priv_data_size   = sizeof(PixletContext),
    .p.capabilities   = AV_CODEC_CAP_DR1 |
                        AV_CODEC_CAP_FRAME_THREADS,
    .caps_internal    = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 693 of file pixlet.c.